Digital Commons Network^™

Obituary: J. Knox Jones, Jr., 1929-1992, James S. Findley, Clyde Jones, Hugh H. Genoways, Elmer C. Birney, Robert J. Baker

University of Nebraska State Museum: Mammalogy Papers

J. Knox Jones, Jr., was born in Lincoln, Nebraska, March 16, 1929, the eldest of the three sons of Virginia Bowen Jones and James Knox Jones. Knox passed away at his home in Lubbock, Texas, on November 15, 1992, after a two-year battle with cancer.

The Use Of The Xylose Tolerance Test As An Indicator Of Malabsorption In Cryptosporidiosis, James A. Evans

Undergraduate Honors Capstone Projects

Cryptosporidium parvum, a protozoan parasite infecting epithelial cells lining the intestinal tract of animals and humans, causes fulminate diarrhea and malabsorption of essential nutrients following damage to the cellular brush border. The present study was undertaken to evaluate the use of a pentose sugar (D-xylose) in a standardized tolerance test as an indicator of malabsorption due to cryptosporidiosis in the dexamethasone (DEX)-immunosuppressed adult C57BL/6N mouse model. One group containing 14 experimental mice (in addition to appropriate control groups) was immunosuppressed using daily intraperitoneal injections of DEX (125 μg/mouse). On day 7 postimmunosuppression, mice were inoculated orally with 104 C. …

Mule Deer Highway Mortality In Northeastern Utah: An Analysis Of Population-Level Impacts And A New Mitigative System, Mark E. Lehnert

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Rerouting highways to accommodate construction of the Jordanelle Reservoir in northeastern Utah caused a dramatic increase in vehicle collisions with mule deer (Odocoileus hemionus). I evaluated the effectiveness of a new system of highway crosswalk structures installed to reduce deer losses and preserve seasonal migrations. In addition, I constructed computer simulation models to investigate how highway mortality has impacted the Jordanelle deer population.

The crosswalk system restricted deer crossings to specific, well-marked areas along highways where motorists could anticipate them. Subsequent to installation, mortality declined 42.3% and 36.8% along a four-lane and two-lane highway, respectively. I was unable …

The Influence Of Forest Fragmentation And Landscape Pattern On American Martens And Their Prey, Christina D. Hargis

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Habitat fragmentation occurs when large tracts of an orginal habitat are replaced by smaller patches of two or more habitat types, largely through human activities. I studied the behavior of six measures of landscape pattern that seemed appropriate for quantifying fragmentation, and used these measures to investigate the effects of forest fragmentation on American martens (Martes americana) and their prey. The measures I selected were edge density, contagion, mean nearest neighbor distance between patches, mean proximity index, perimeter-area fractal dimension, and mass fractal dimension. To test the behavior of these measures with a variety of landscape patterns, I …

A Survey Of Employees Of The United States Department Of Agriculture's Animal Damage Control Program, Susan A. Schroeder

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

This study examined the attitudes of employees of the United States Department of Agriculture's Animal Damage Control (ADC) Program. This research examined ADC employees' attitudes about wildlife, the ADC program and ADC employment, wildlife damage management methods, euthanasia and the killing process, and the role of various public and private groups on ADC policy. This study also applied the theory of organizational capture to the ADC program to test its utility in explaining the attitudes and behaviors of employees. Results were based on a survey of ADC employees conducted in January 1995.

Survey responses were analyzed to explore associations between …

Assessment Of Kokanee Salmon, Oncorhynchus Nerka, Genetic Stocks In Flaming Gorge Reservoir, Utah-Wyoming, Michael F. Canning

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

I investigated the relative abundance, spatial distributions, return to the creel, and growth rates of two genetic stocks of kokanee salmon, Oncorhynchus nerka, in Flaming Gorge Reservoir, Utah-Wyoming. The two genetic stocks consist of fish from the two major spawning populations of kokanee in the reservoir. One population, Shore Spawners, spawns along the eastern shoreline of the Open Hills area of the reservoir. The other population, Sheep Creek, spawns in Sheep Creek, a tributary located in the Canyon area of the reservoir.

Mitochondrial DNA of kokanee from each population was analyzed to determine haplotype differences between stocks. These haplotype …

Habitat Selection And Movement Of A Stream-Resident Salmonid In A Regulated River And Tests Of Four Bioenergetic Optimization Models, Mark D. Bowen

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

A bioenergetics model was constructed for stream-resident drift-feeding salmonids. Model predictions of surplus power (energy available per unit time for growth and reproduction) were not statistically distinguishable from observations of surplus power in three laboratory studies. Of 40 experimental trials in these three studies, the model correctly predicted surplus power in 39 cases (p < 0.05).

I collected observations of rainbow trout (Oncorhynchus mykiss) focal velocity and physical habitat availability in the Green River of northeastern Utah, USA (1988-1990). In the winter of 1988, Flaming Gorge Dam generated hydropower and delivered an lJDStable discharge regime with a higher mean discharge …

Second Growth Forest As Potential Marten Habitat In Western Newfoundland: An Examination Of Forest Habitat Structure And Microtine Abundance, Brian R. Sturtevant

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The American marten (Martes americana) is associated with large tracts of relatively undisturbed, mature coniferous forests. I examined coarse woody debris (CWD) structure and small mammal abundance with respect to forest age and stem structure within second-growth forests, in comparison with old-growth stands in western Newfoundland. Results suggest that a critical change in marten habitat quality may occur at stand senescence, due to decreased tree competition, more complex subcanopy structure, and increased meadow vole (Microtus pennsylvanicus) abundance.

Analysis of stem structure within a chronosequence of 19 second-growth stands indicated high intertree competition, with dense canopy closure …

Livestock As Seed Disseminators For Reseeding Degraded Rangelands: The Role Of Dung In Gap Formation And Plant Establishment, Brian S. Auman

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Livestock (cattle and sheep) were examined as seed disseminators for reseeding degraded Intermountain rangelands. "Hycrest" crested wheatgrass [Agropyron desertorum (Fisch. ex Link) Schult. X A. cristatum (L.) Gaert.] seed was fed to yearling Holstein steers and Suffolk ewes. Dung was collected from each animal type and deposited on plots of high and low densities of an annual [cheatgrass (Bromus tectorum L.)] and perennial [squirreltail (Sitanion hystrix Nutt.)] grass species. The experiment evaluated the ability of the dung to suppress the resident vegetation, and the recruitment and establishment of Hycrest seedlings emerging from the dung.

Sheep dung had …

Evaluation Of The Delta Waterfowl Foundation's Adopt-A-Pothole Project, Daniel S. Vice

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

The establishment of dense nesting cover (DNC) for breeding waterfowl is a common management practice on large blocks of former agricultural land. The Delta Waterfowl Foundation's Adopt-A-Pothole (AAP) program establishes DNC adjacent to small wetland complexes to increase waterfowl use and productivity. I evaluated waterfowl use and nesting success on AAP lease sites in southwestern Manitoba in 993- 94 and compared the relative amount and success of overwater and upland nesting by mallards using these sites.

Diving duck breeding pair densities were higher on treatment sites in both 1993 and 1994 (P = 0.02 and 0.02, respectively). Dabbling duck …

Development Of An Ovine Genome Map With Emphasis On In Situ Hybridization, Melanie R. Heaton

All Graduate Theses and Dissertations, Spring 1920 to Summer 2023

Livestock genome maps are used to identify economic trait loci and loci proximal to genes affecting economically important traits. This research contributes to the development of the ovine genome map by establishing techniques to physically map large DNA inserts to ovine chromosomes using fluorescent in situ hybridization. Fluorescent in situ hybridization techniques were established using yeast artificial chromosomes as DNA probes. Probes were as large as 1,000,000 kilobases and hybridized to fixed ovine metaphase chromosomes from a callipyge ewe. Three yeast artificial chromosome probes contained a genetic marker for the ovine callipyge gene. Probes were assigned to ovine chromosome pair …

Selecting Wilderness Areas To Conserve Utah's Biological Diversity, Diane W. Davidson, William D. Newmark, Jack W. Sites Jr., Dennis K. Shiozawa, Eric A. Rickart, Kimball T. Harper, Robert B. Keiter

Great Basin Naturalist

Congress is currently evaluating the wilderness status of Bureau of Land Management (BLM) public lands in Utah. Wilderness areas play many important roles, and one critical role is the conservation of biological diversity. We propose that objectives for conserving biodiversity on BLM lands in Utah be to (1) ensure the long-term population viability of native animal and plant species, (2) maintain the critical ecological and evolutionary processes upon which these species depend, and (3) preserve the full range of communities, successional stages, and environmental gradients. To achieve these objectives, wilderness areas should be selected so as to protect large, contiguous …

State Of The Fisheries Report 1994/1995, Fisheries Department Of Western Australia

Status Reports of the Fisheries and Aquatic Resources

This State ofFisheries document is designed to be used as an adjunct to the Annual Report. This year is the first year that this document has been presented in this format. It is envisaged that the State of Fisheries document will be an annual report giving specific details on all fisheries of major importance to the commercial, recreational and aquaculture sectors of Western Australia. The State ofFisheries contains details such as landings, effort, catch rates, stock assessment, breeding stock levels and catch forecasts where possible. The data in this document are of the last full year (12 months) available to …

Recruitment Of Blue Crab, Callinectes Sapidus, Postlarvae To The Back-Barrier Lagoons Of Virginia's Eastern Shore, Robert D. Brumbaugh

OES Theses and Dissertations

Most research on the early life history of the blue crab, Callinectes sapidus, has been conducted in large partially stratified estuaries such as the Chesapeake Bay. In contrast, little is known about the recruitment dynamics or habitat requirements of blue crab postlarvae (megalopae) in shallow well-mixed lagoonal systems that make up a considerable part of the species' range. In Virginia's coastal lagoons, planktonic blue crab megalopae are most abundant at night on flooding tides, and are not abundant during the daytime or on ebbing tides. This appears to enhance retention within the lagoons, despite the short residence time of water …

Estimation Of Variances Due To Direct And Maternal Effects For Growth Traits Of Nelore Cattle, J. P. Eler, L. Dale Van Vleck, J. B. S. Ferraz, R. B. Lobo

Department of Animal Science: Faculty Publications

Estimates of (co)variance components and genetic parameters were obtained for birth, 205-d, and 365-d weight for Nelore cattle in Brazil, using single and multiple-trait animal models. Data were from the Brazilian Zebu Breeders Association (ABCZ). Records of 27,549 calves sired by 587 bulls and raised on pasture in 57 herds were analyzed by restricted maximum likelihood fitting an animal model including direct and maternal genetic and permanent environmental effects. Single and multiple- trait analyses were carried out. Heritability estimates for direct effects were lower than previous values reported for the Nelore breed. The estimates for maternal genetic effects showed that …

Effect Of Selection For Size Of Testes In Boars On Semen And Testis Traits, Ying-Tsorn Huang, Rodger K. Johnson

Department of Animal Science: Faculty Publications

The objective of this study was to evaluate the effects of selection for increased size of testes on semen and testis characteristics. Boars from a line selected for increased size of testes at 150 d of age (TS, n = 25) and a randomly selected control line (C, n = 18) were used. Semen was collected three times per week for 3 wk (TRT1) then daily for 3 wk (TRT2) beginning when boar age averaged 276 d. It was followed by a 4-wk period of one collection per week and then the TRT1-TRT2 sequence was repeated. After 64 collections, boars …

Bad Ethics, Good Ethics And The Genetic Engineering Of Animals In Agriculture, Bernard Rollin

Genetics Collection

Genetic engineers have been remiss in addressing ethical and social issues emerging from this powerful new technology, a technology whose implications for agriculture are profound. As a consequence of this failure, society has been uneasy about genetic engineering of animals and has had difficulty distinguishing between genuine and spurious ethical issues the technology occasions. Many of the most prominent concerns do not require a serious response. On the other hand, concerns about a variety of possible risks arising from genetic engineering of animals require careful consideration and dialogue with the public. Such concerns are an admixture of ethics and prudence. …

A Report On The Issues Affecting The Use Of The Dampier Archipelago, Peter Driscoll

Fisheries Management Papers

This report was commissioned by the Minister for Fisheries following concerns about resource sharing, allocation of licences and leases for pearling and aquaculture, recreational and commercial fishing opportunities, and local residents continued ability to access the islands and marine areas of the Dampier Archipelago. The purpose of this report is to provide a scoping document for a marine planning study for the Dampier Archipelago for the Fisheries Department and the Minister for Fisheries.

Fishermen's Views On The Future Management Of The Rock Lobster Fishery: A Report Prepared On Behalf Of The Rock Lobster Industry Advisory Committee, The Marketing Centre, Rock Lobster Industry Advisory Committee

Fisheries Management Papers

In June 1995, a self-completion survey of fishermen in the rock lobster fishery was sent out by The Marketing Centre to 589 licensees. A total of 206 valid responses were received. The questionnaire was fairly long and dealt with a number of complex issues. As such, this response rate of 36.0% compares favorably with the average for postal surveys of around 40.0%. The following represents the main findings from the survey.

Same Fish - Different Rules - Proceedings Of The National Fisheries Management Network Workshop Held As Part Of The Third Australasian Fisheries Managers Conference August 1995, F. B. Prokop

Fisheries Management Papers

This workshop represents the third time that a specific recreational fisheries workshop has been held in conjunction with the Australasian Fisheries Managers Conference. It is designed to analyse the different management approaches from the various fisheries agencies which have responsibility for selected species. The case studies that make up the workshop have been selected to represent the diversity of situations including freshwater, marine, pelagic and invertebrate species.

Proceedings: Seventeenth Vertebrate Pest Conference, Rohnert Park, California, March 5-7, 1996 (Complete Work), Robert M. Timm , Editor, A. Charles Crabb , Editor

Vertebrate Pest Conference Proceedings: 17th (1996)

340 registered attendees
58 papers
273 pages
52 Mb

You have come from throughout California, from across the United States, and from many corners of the world to gather here for the purpose of sharing information, expertise, and wisdom in dealing with vertebrate pest problems. Our common purpose is to find yet better methods for preventing and resolving situations in which wildlife comes into conflict with humans. The Conference's mission remains one of education. We learn from each other, and we strive to find better ways of applying our knowledge to real-world problems.

Kentucky Warbler (Vol. 72, No. 1), Kentucky Library Research Collections

The Kentucky Warbler

No abstract provided.

Balancing The Scales: Access And Equity In Fisheries Management - Proceedings Of The Third Australasian Fisheries Managers Conference, Rottnest Island, Western Australia, 2-4 August 1995, Patricia Summerfield

Fisheries Management Papers

The papers reproduced in this volume were presented at the Third Australasian Fisheries Managers Conference held at Kingstown Environmental Education Centre, Rottnest Island, Western Australia, from 2-4 August 1995. Two presentations have not been received in full written form and one paper was not available for publication due to copyright being held elsewhere. Abstracts of these papers are included in the proceedings. The papers are arranged in order of presentation at the Conference. The scenarios used in the workshop sessions are reproduced at the end of the proceedings for information.

Management Arrangements For Specimen Shell Collection In Western Australia, 1995, Jonathon Hs Barrington, C A. Campbell

Fisheries Management Papers

The Specimen Shell Fishery in Western Australia is based on the collection of marine species of the phylum Mollusca for the purposes of display, collection, cataloguing, classification and sale. Specimen shells may be alive or dead at the time of take and include beach-washed shells. Fossilised shells do not constitute specimen shells. This document has been prepared to detail the legislative requirements of the Western Australian Government, as well as to fulfill the requirements under the Commonwealth Wildlife Protection (Regulation of Exports and Imports) Act 1982 to allow for the export of specimen shells from Western Australian waters and the …

Homing Behavior And Orientation In The Gopher Tortoise, Gopherus Polyphemus, Kevin Michael Connor

USF Tampa Graduate Theses and Dissertations

Gopher tortoises are found in xeric habitats in the southeastern United States. In these xeric habitats, gopher tortoises excavate and reside in burrows which provide shelter and protection. Gopher tortoises are active throughout the year, often making several journeys a day away from their burrows. Although they may move substantial distances, they return to their burrows, suggesting that they posses a well-developed orientation and homing ability. This study investigated the ability of gopher tortoises to home from short distance (40 meters, just outside of or on the perimeter of their home ranges) and intermediate distances (200 meters, approximately 2 home …

A Lighter Shade Of Green: Reproducing Nature In Central Florida, Kevin Archer

All Faculty Scholarship for the School of Graduate Studies and Research

No abstract provided.

Dairy Digest 1995-1996, South Dakota State University Dairy Club

Dairy Digest

No abstract provided.

A Study On The Life History And Seasonal Foraging Habits Of The Salamander Desmognathus Quadramaculatus Holbrook, In Wv, Glenn R. Mills

Theses, Dissertations and Capstones

A study was conducted on Desmognathus quadramaculatus in the northern periphery of its range with some aspects of its life history, surface density, and seasonal foraging habits. The results in this study are compared to studies done on D. quadramaculatus in the southern portion of its range. Female D. quadramaculatus have been found tending egg clutches from June to September in the southern portion of its range and data collected in this study shows that egg deposition also occurs during this period in the northern population. Female size (SVL) at which D. quadramaculatus reach sexual maturity ranged from 57.6- 77.5 …

An Analysis Of Habitat Utilization And Feeding Ecology Of Plethodon Richmondi And Plethodon Cinereus In Northern West Virginia, Peter A. Kramer

Theses, Dissertations and Capstones

Studies were conducted on the comparative microhabitat requirements and feeling habits of the ravine salamander, Plethodon richmondi and the redback salamander, P. cinereus in northern West Virginia. Plethodon richmondi had a mean SVL of 49.7 ± 7.1 mm and were significantly larger than P. cinereus which had a mean SVL of 37.2 ± 8.0 mm. Both species had biennial egg laying patterns and deposited eggs in late spring or early summer. Juvenile P. richmondi were not surface active except for the early spring and neonates did not become surface active until the ensuing spring; conversely, P. cinereus juveniles exhibited more …

Use Of The (3)H-Tetracycline Rat Model In The Study Of Skeletal Compartmentalization And Metabolism Of Calcium In The Maturing Male And Female Rat And The Role Of The Skeleton In Calcium Homeostasis In The Adolescent Male Rat, Darrin Lee Demoss

Theses, Dissertations and Capstones

The (3)H-tetracycline bone labeling procedure was employed to monitor bone resorption from urinary loss curves in male and female rats of various ages. In addition, whole body dry skeletal mass and the loss of (3)H-tetracycline from individual bones was determined. It was found that the dry skeletal mass/body mass ratio of 24-week-old females was 30-40% greater than that for males. The urinary loss of (3)H-tetracycline was described by a double exponential equation indicating the presence of two distinct and independent exchangeable bone compartments. Both compartments decrease in size with age, but their label loss activities were different. The label loss …